/*-
 *  * Copyright 2016 Skymind, Inc.
 *  *
 *  *    Licensed under the Apache License, Version 2.0 (the "License");
 *  *    you may not use this file except in compliance with the License.
 *  *    You may obtain a copy of the License at
 *  *
 *  *        http://www.apache.org/licenses/LICENSE-2.0
 *  *
 *  *    Unless required by applicable law or agreed to in writing, software
 *  *    distributed under the License is distributed on an "AS IS" BASIS,
 *  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  *    See the License for the specific language governing permissions and
 *  *    limitations under the License.
 */

package org.datavec.api.transform.condition;

import java.util.Set;

/**
 * Created by Alex on 24/03/2016.
 */
public enum ConditionOp {
    LessThan, LessOrEqual, GreaterThan, GreaterOrEqual, Equal, NotEqual, InSet, NotInSet;


    public boolean apply(double x, double value, Set<Double> set) {
        switch (this) {
            case LessThan:
                return x < value;
            case LessOrEqual:
                return x <= value;
            case GreaterThan:
                return x > value;
            case GreaterOrEqual:
                return x >= value;
            case Equal:
                return x == value;
            case NotEqual:
                return x != value;
            case InSet:
                return set.contains(x);
            case NotInSet:
                return !set.contains(x);
            default:
                throw new RuntimeException("Unknown or not implemented op: " + this);
        }
    }


    public boolean apply(float x, float value, Set<Float> set) {
        switch (this) {
            case LessThan:
                return x < value;
            case LessOrEqual:
                return x <= value;
            case GreaterThan:
                return x > value;
            case GreaterOrEqual:
                return x >= value;
            case Equal:
                return x == value;
            case NotEqual:
                return x != value;
            case InSet:
                return set.contains(x);
            case NotInSet:
                return !set.contains(x);
            default:
                throw new RuntimeException("Unknown or not implemented op: " + this);
        }
    }

    public boolean apply(int x, int value, Set<Integer> set) {
        switch (this) {
            case LessThan:
                return x < value;
            case LessOrEqual:
                return x <= value;
            case GreaterThan:
                return x > value;
            case GreaterOrEqual:
                return x >= value;
            case Equal:
                return x == value;
            case NotEqual:
                return x != value;
            case InSet:
                return set.contains(x);
            case NotInSet:
                return !set.contains(x);
            default:
                throw new RuntimeException("Unknown or not implemented op: " + this);
        }
    }

    public boolean apply(long x, long value, Set<Long> set) {
        switch (this) {
            case LessThan:
                return x < value;
            case LessOrEqual:
                return x <= value;
            case GreaterThan:
                return x > value;
            case GreaterOrEqual:
                return x >= value;
            case Equal:
                return x == value;
            case NotEqual:
                return x != value;
            case InSet:
                return set.contains(x);
            case NotInSet:
                return !set.contains(x);
            default:
                throw new RuntimeException("Unknown or not implemented op: " + this);
        }
    }


    public boolean apply(String x, String value, Set<String> set) {
        switch (this) {
            case Equal:
                return value.equals(x);
            case NotEqual:
                return !value.equals(x);
            case InSet:
                return set.contains(x);
            case NotInSet:
                return !set.contains(x);
            case LessThan:
            case LessOrEqual:
            case GreaterThan:
            case GreaterOrEqual:
                throw new UnsupportedOperationException("Cannot use ConditionOp \"" + this + "\" on Strings");
            default:
                throw new RuntimeException("Unknown or not implemented op: " + this);
        }
    }



}
